French "yellow vest" boxer on trial for punching pôlice A former boxer who became a hero to some of France's "yellow vest" protesters after being filmed punching police officers during a demonstration in Paris goes on trial today on charges that carry up to seven years in jail. Christophe Dettinger, 37, an ex national light-heavyweight champion, was caught on camera on January 5 throwing a flurry of punches at an officer during clashes on a footbridge over the river Seine near parliament. IMAGES